CN110307663B - Two-stage type steam heat pump and hot water type refrigerating lithium bromide absorption unit - Google Patents
Two-stage type steam heat pump and hot water type refrigerating lithium bromide absorption unit Download PDFInfo
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- CN110307663B CN110307663B CN201910607742.3A CN201910607742A CN110307663B CN 110307663 B CN110307663 B CN 110307663B CN 201910607742 A CN201910607742 A CN 201910607742A CN 110307663 B CN110307663 B CN 110307663B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 235
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 title claims abstract description 38
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 20
- 239000003507 refrigerant Substances 0.000 claims abstract description 71
- 239000006096 absorbing agent Substances 0.000 claims abstract description 36
- 238000010438 heat treatment Methods 0.000 claims abstract description 35
- 230000001105 regulatory effect Effects 0.000 claims abstract description 24
- 238000005057 refrigeration Methods 0.000 claims abstract description 14
- 239000002918 waste heat Substances 0.000 claims description 20
- 239000000498 cooling water Substances 0.000 claims description 17
- 239000002826 coolant Substances 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- IPLONMMJNGTUAI-UHFFFAOYSA-M lithium;bromide;hydrate Chemical compound [Li+].O.[Br-] IPLONMMJNGTUAI-UHFFFAOYSA-M 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B15/00—Sorption machines, plants or systems, operating continuously, e.g. absorption type
- F25B15/02—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas
- F25B15/06—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas the refrigerant being water vapour evaporated from a salt solution, e.g. lithium bromide
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B33/00—Boilers; Analysers; Rectifiers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/04—Condensers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Sorption Type Refrigeration Machines (AREA)
Abstract
The invention relates to a lithium bromide absorption unit for two-stage steam heat pump and hot water refrigeration, which divides a refrigerant U-shaped pipe for cold water of a condenser into two paths from the bottom, wherein one path of the refrigerant U-shaped pipe is provided with a refrigerant water ball valve, the other path of the refrigerant U-shaped pipe is provided with a refrigerant water seal device, and the two paths of refrigerant water are converged and then enter the corresponding evaporator; and a concentrated solution regulating valve is arranged on the corresponding absorber pipe into which the concentrated solution enters. The invention realizes the establishment of pressure difference and the adjustment of solution circulation volume through the concentrated solution adjusting valve at the solution side, and the refrigerant water side ensures the establishment of pressure difference and the flow of refrigerant water through the refrigerant water ball valve and the refrigerant water seal device which are newly arranged on the refrigerant water U-shaped pipe, thereby ensuring that the unit can safely and reliably operate under two working conditions of heating and refrigerating, reducing the heat exchange area of the unit, reducing the material cost and realizing two purposes.
Description
Technical Field
The invention relates to a lithium bromide absorption type unit for two-stage steam heat pump and hot water type refrigeration, belonging to the technical field of refrigeration equipment.
Background
In the production process or life, air conditioning is required to heat or cool, and a certain energy source is required to be consumed to realize the heating or cooling. In the production process, a large amount of medium (low) temperature waste heat exists, and some waste heat is discharged due to unavailable use, so that waste is caused. In order to save energy and reduce emission, the lithium bromide absorption type heating or refrigerating technology is utilized, and the part of waste heat can be recycled, so that the heating or refrigerating purpose is realized. In general, when low-temperature waste heat (the temperature is about 35 ℃) and steam exists, the low-temperature waste heat needs deep recovery, heating hot water needs to be heated greatly, and when heating is needed, the first-choice product is a two-stage steam type first-class lithium bromide absorption heat pump unit (the flow chart is shown in figure 1); when the medium-temperature waste heat (the temperature is about 95 ℃) exists, the medium-temperature waste heat needs to be deeply utilized, and when refrigeration is needed, the first-choice product is a two-stage hot water type lithium bromide absorption water chilling unit (the flow chart is shown in figure 2). For the conditions and parameter conditions, two units are required to be invested in the occasions requiring heat supply in winter and refrigeration in summer, one unit is used for heating, the other unit is used for refrigeration, initial investment cost is relatively high, and how to realize deep recovery of waste heat for heat supply in winter and deep utilization of driving hot water for refrigeration in summer on the same unit is one machine for two purposes, so that investment cost is reduced, energy is saved, and safety and reliability are one of important subjects of current research.
Disclosure of Invention
The invention aims to overcome the defects and provide the two-stage type steam heat pump and hot water type refrigerating lithium bromide absorption unit which is used for deeply recovering waste heat for heating in winter and deeply utilizing hot water for refrigerating in summer, has the advantages of dual purposes, reduced initial investment, energy source saving, compact structure, safety and reliability.
The purpose of the invention is realized in the following way:
a lithium bromide absorption unit for two-stage steam heat pump and hot water refrigeration comprises a first steam generator, a first hot water generator, a first condenser, a first evaporator, a first absorber, a first heat exchanger, a first solution pump, a first refrigerant pump, a second steam generator, a second hot water generator, a second condenser, a second evaporator, a second absorber, a second heat exchanger, a second solution pump, a second refrigerant pump, a control system, pipelines for connecting all components and valves, wherein the first steam generator, the first hot water generator and the first condenser are arranged in a first cavity, the first steam generator and the first hot water generator are arranged on the same side of the first cavity, and the first condenser is arranged on the other side of the first cavity; the second steam generator, the second hot water generator and the second condenser are arranged in the second cavity, the second steam generator and the second hot water generator are arranged on the same side of the second cavity, and the second condenser is arranged on the other side of the second cavity; the method comprises the steps that first condenser coolant water enters a first coolant water U-shaped pipe of a first evaporator and is divided into two paths from the bottom, a first coolant water ball valve is arranged on one coolant water pipe, a first coolant water seal device is arranged on the other coolant water pipe, and the two paths of coolant water are converged and then enter the first evaporator; the second condenser coolant water is fed into a second coolant water U-shaped pipe of a second evaporator and is divided into two paths from the bottom, a second coolant water ball valve is arranged on one coolant water pipe, a second coolant water seal device is arranged on the other coolant water pipe, and the two paths of coolant water are converged and then fed into the second evaporator; a first concentrated solution regulating valve is arranged on a tube of the concentrated solution feeding first absorber; a second concentrated solution regulating valve is arranged on the tube of the concentrated solution feeding second absorber.
Preferably, when heating in winter, the valves of the hot water, cold water and cooling water systems are driven to be closed, the first hot water generator and the second hot water generator stop working, the valves of the steam, waste heat water and heating hot water systems are opened, the corresponding first cold water ball valves and second cold water ball valves on the first cold water U-shaped pipe and the second cold water U-shaped pipe are closed, cold water from the first condenser enters the first evaporator through the first cold water seal device on the first cold water U-shaped pipe, cold water from the second condenser enters the second evaporator through the second cold water seal device on the second cold water U-shaped pipe, the concentrated solution is adjusted to enter the first concentrated solution adjusting valve on the first absorber pipe, the concentrated solution is adjusted to enter the second concentrated solution adjusting valve on the second absorber pipe, the unit operates according to the working principle of the second-section type steam type lithium bromide absorption heat pump, and the steam is connected in parallel to enter the first steam generator and the second steam generator to be condensed; the waste heat water firstly enters the second evaporator for cooling and then enters the first evaporator for cooling; the heating hot water sequentially enters the first absorber, the second condenser and the first condenser in series to complete the whole temperature rising process so as to supply heat for users.
Preferably, when refrigerating in summer, the steam, the waste heat water and the heating hot water system are closed, the first steam generator and the second steam generator stop working, the valves of the hot water, the cold water and the cooling water system are opened and driven, the corresponding first cold water ball valves and the second cold water ball valves on the first cold water U-shaped pipe and the second cold water U-shaped pipe are opened, the concentrated solution is adjusted to enter a first concentrated solution adjusting valve on the first absorber pipe, the concentrated solution is adjusted to enter a second concentrated solution adjusting valve on the second absorber pipe, the unit operates according to the working principle of the two-section hot water type lithium bromide absorption cold water unit, and the hot water is driven to enter the first hot water generator for cooling and then enter the second hot water generator for cooling and then flows out of the unit; cooling the cold water firstly in the second evaporator and then in the first evaporator to prepare cold water required by a user; the cooling water sequentially enters the first absorber, the second condenser and the first condenser in series to carry heat out of the unit.
The beneficial effects of the invention are as follows:
through the brand new structure, flow and valve switching and adjustment, the heating hot water is heated up higher while the steam heat pump is operated in winter to recover more waste heat, and the hot water type refrigeration is operated in summer to increase the refrigerating capacity by more utilizing the heat of the waste heat source. Because the heat pump heating working condition parameters and the refrigerating working condition parameters are different, the pressure difference between the inside of the condenser cavity of the generator and the inside of the absorber cavity of the evaporator is far larger than the pressure difference in the hot water type refrigerating working condition when the heat pump heating working condition is operated, the pressure difference and medium flow between the cavities are established under the heating working condition and the refrigerating working condition, the establishment of the pressure difference and the adjustment of the circulating volume of the solution are realized on the solution side through the concentrated solution adjusting valve, and the establishment of the pressure difference and the flowing of the refrigerant water are ensured on the refrigerant water side through the refrigerant water ball valve and the refrigerant water seal which are newly arranged on the refrigerant water U-shaped pipe, so that the heat pump heating working condition and the refrigerating working condition can be operated safely and reliably, and meanwhile, the concentration difference and the heat exchange temperature difference of the solution are increased by two sections, the heat exchange area of the heat pump heating working condition is reduced, the material cost is reduced, the primary investment cost of equipment is reduced, the waste heat source waste heat is recycled and utilized, the energy consumption is saved, and the environment is protected.
Drawings
FIG. 1 is a flow chart of a prior art two-stage vapor type first class lithium bromide absorption heat pump unit;
FIG. 2 is a flow chart of a prior art two-stage hot water lithium bromide absorption chiller;
fig. 3 is a flow chart of a two-stage vapor heat pump and hot water refrigeration lithium bromide absorption unit.
In the figure: the first condenser 1, the first steam generator 2, the second steam generator 3, the second condenser 4, the second heat exchanger 5, the second steam inlet regulating valve 6, the second condensate outlet valve 7, the residual water outlet valve 8, the residual water inlet valve 9, the concentrated solution inlet second absorber pipe 10, the second refrigerant water U-shaped pipe 11, the second absorber 12, the second evaporator 13, the second refrigerant pump 14, the second solution pump 15, the first solution pump 16, the first refrigerant pump 17, the first evaporator 18, the first absorber 19, the first refrigerant water U-shaped pipe 20, the concentrated solution inlet first absorber pipe 21, the heating hot water inlet valve 22, the first heat exchanger 23, the first condensate outlet valve 24, the first steam inlet regulating valve 25, the heating hot water outlet valve 26, the driving hot water inlet valve 27, the driving hot water outlet valve 28, the first hot water generator 29, the second hot water generator 30, the cold water outlet valve 31, the cold water inlet valve 32, the cooling water inlet valve 33, the cooling water outlet valve 34, the second refrigerant water outlet valve 35, the second refrigerant water regulator 35, the second refrigerant water valve 37, the first refrigerant ball valve 40, the first refrigerant seal cavity 40, the second refrigerant water cavity 40 and the second refrigerant ball valve 40.
Description of the embodiments
Referring to fig. 3, the present invention relates to a lithium bromide absorption type unit for two-stage steam heat pump and hot water refrigeration, comprising a first steam generator 2, a first hot water generator 29, a first condenser 1, a first evaporator 18, a first absorber 19, a first heat exchanger 23, a first solution pump 16, a first refrigerant pump 17, a second steam generator 3, a second hot water generator 30, a second condenser 4, a second evaporator 13, a second absorber 12, a second heat exchanger 5, a second solution pump 15, a second refrigerant pump 14, a control system, and pipes, valves, etc. connecting the respective components. Wherein, surplus hot water inlet valve 9 and surplus hot water outlet valve 8 are correspondingly arranged on the surplus hot water inlet and outlet pipelines, heating hot water inlet valve 22 and heating hot water outlet valve 26 are correspondingly arranged on the heating hot water inlet and outlet pipelines, cold water inlet and outlet pipelines are additionally arranged on the surplus hot water inlet and outlet pipelines in parallel, cold water inlet valve 32 and cold water outlet valve 31 are correspondingly arranged on the cold water inlet and outlet pipelines, cooling water inlet valve 33 and cooling water outlet valve 34 are correspondingly arranged on the cooling water inlet and outlet pipelines, driving hot water inlet valve 27 and driving hot water outlet valve 28 are correspondingly arranged on the driving hot water inlet and outlet pipelines, driving steam is led into and discharged from the first steam generator 2 through the first driving steam inlet and outlet pipelines, the first steam inlet regulating valve 25 and the first condensate outlet valve 24 are correspondingly arranged on the first driving steam inlet and outlet pipelines, the second steam generator 3 is correspondingly arranged on the second driving steam inlet and outlet pipelines, and the second steam inlet regulating valve 6 and the second condensate valve 7 are correspondingly arranged on the second driving steam inlet and outlet pipelines.
The first steam generator 2, the first hot water generator 29 and the first condenser 1 are arranged in the first cavity 41, the first steam generator 2 and the first hot water generator 29 are arranged on the same side of the first cavity 41, and the first condenser 1 is arranged on the other side of the first cavity 41; disposing the second steam generator 3, the second hot water generator 30 and the second condenser 4 in the second cavity 42, with the second steam generator 3 and the second hot water generator 30 on the same side of the second cavity 42 and the second condenser 4 on the other side of the second cavity 42; the first cold water U-shaped pipe 20 for feeding the cold water of the first condenser 1 into the first evaporator 18 is divided into two paths from the bottom part, one path of cold water pipeline is provided with a first cold water ball valve 39, the other path of cold water pipeline is provided with a first cold water liquid seal device 38, and the two paths of cold water are converged and then enter the first evaporator 18; the second cold water U-shaped pipe 11 for feeding the cold water of the second condenser 4 into the second evaporator 13 is divided into two paths from the bottom, one path of cold water pipe is provided with a second cold water ball valve 36, the other path of cold water pipe is provided with a second cold water seal 37, and the two paths of cold water are converged and then enter the second evaporator 13; a first concentrated solution regulating valve 40 is provided on the concentrated solution feed first absorber tube 21; a second concentrated solution regulating valve 35 is provided on the concentrated solution feed second absorber tube 10.
When heating in winter, the hot water inlet valve 27, the hot water outlet valve 28, the cold water inlet valve 32, the cold water outlet valve 31, the cooling water inlet valve 33 and the cooling water outlet valve 34 are all closed, and the first hot water generator 29 and the second hot water generator 30 stop working; the first steam inlet regulating valve 25, the first condensate outlet valve 24, the second steam inlet regulating valve 6, the second condensate outlet valve 7, the residual water inlet valve 9, the residual water outlet valve 8, the heating hot water inlet valve 22 and the heating hot water outlet valve 26 are all opened, the first cold water ball valve 39 on the first cold water U-shaped pipe 20 and the second cold water ball valve 36 on the second cold water U-shaped pipe 11 are closed, the cold water from the first condenser 1 enters the first evaporator 18 through the first cold water seal 38 on the first cold water U-shaped pipe 20, the cold water from the second condenser 4 enters the second evaporator 13 through the second cold water seal 37 on the second cold water U-shaped pipe 11, the concentrated solution is adjusted to enter the first concentrated solution regulating valve 40 on the first absorber pipe 21, the second concentrated solution regulating valve 35 on the second absorber pipe 10 is adjusted, and the unit operates according to the second-stage type steam type lithium bromide absorption heat pump working principle that the unit enters the first steam generator 2 and the second steam generator in parallel; the residual heat water firstly enters the second evaporator 13 for cooling and then enters the first evaporator 18 for cooling; the heating hot water sequentially enters the first absorber 19, the second absorber 12, the second condenser 4 and the first condenser 1 in series to complete the whole temperature rising process so as to supply heat to users.
In summer, the first steam inlet regulating valve 25, the first condensate outlet valve 24, the second steam inlet regulating valve 6, the second condensate outlet valve 7, the residual water inlet valve 9, the residual water outlet valve 8, the heating hot water inlet valve 22 and the heating hot water outlet valve 26 are all closed, and the first steam generator 2 and the second steam generator 3 stop working; the hot water inlet valve 27, the hot water outlet valve 28, the cold water inlet valve 32, the cold water outlet valve 31, the cooling water inlet valve 33 and the cooling water outlet valve 34 are all opened, and then the first cold water ball valve 39 on the first cold water U-shaped pipe 20 and the second cold water ball valve 36 on the second cold water U-shaped pipe 11 are opened, so that the concentrated solution is adjusted to enter the first concentrated solution adjusting valve 40 on the first absorber pipe 21, and the concentrated solution is adjusted to enter the second concentrated solution adjusting valve 35 on the second absorber pipe 10. Because the pressure difference between the first condenser 1 and the cavity of the first evaporator 18 and the pressure difference between the second condenser 4 and the cavity of the second evaporator 13 are far smaller than the pressure difference corresponding to the heating working condition, and the resistance of the first refrigerant liquid seal 38 on the first refrigerant liquid U-shaped pipe 20 and the resistance of the second refrigerant liquid seal 37 on the second refrigerant liquid U-shaped pipe 11 are large, the refrigerant liquid from the first condenser 1 enters the first evaporator 18 through the first refrigerant liquid ball valve 39 on the first refrigerant liquid U-shaped pipe 20, and the refrigerant liquid from the second condenser 4 enters the second evaporator 13 through the second refrigerant liquid ball valve 36 on the second refrigerant liquid U-shaped pipe 11. The unit operates according to the working principle of a two-stage hot water type lithium bromide absorption type water chilling unit, and drives hot water to enter the first hot water generator 29 for cooling and then enter the second hot water generator 30 for cooling and then flow out of the unit; the cold water firstly enters the second evaporator 13 for cooling and then enters the first evaporator 18 for cooling to prepare cold water required by a user; the cooling water sequentially enters the first absorber 19, the second absorber 12, the second condenser 4 and the first condenser 1 in series to carry heat out of the unit.
In addition to the above embodiments, the present invention also includes other embodiments, and all technical solutions that are formed by equivalent transformation or equivalent substitution should fall within the protection scope of the claims of the present invention.
Claims (3)
1. The utility model provides a two-stage steam type heat pump and hot water type refrigerated lithium bromide absorption formula unit, this unit includes first steam generator (2), first hot water generator (29), first condenser (1), first evaporimeter (18), first absorber (19), first heat exchanger (23), first solution pump (16), first coolant pump (17), second steam generator (3), second hot water generator (30), second condenser (4), second evaporimeter (13), second absorber (12), second heat exchanger (5), second solution pump (15), second coolant pump (14) and each valve, its characterized in that: arranging a first steam generator (2), a first hot water generator (29) and a first condenser (1) in a first cavity (41), wherein the first steam generator (2) and the first hot water generator (29) are arranged on the same side of the first cavity (41), and the first condenser (1) is arranged on the other side of the first cavity (41); the second steam generator (3), the second hot water generator (30) and the second condenser (4) are arranged in the second cavity (42), the second steam generator (3) and the second hot water generator (30) are arranged on the same side of the second cavity (42), and the second condenser (4) is arranged on the other side of the second cavity (42); the first refrigerant water U-shaped pipe (20) for feeding the refrigerant water of the first condenser (1) into the first evaporator (18) is divided into two paths from the bottom, a first refrigerant water ball valve (39) is arranged on one path of refrigerant water pipeline, a first refrigerant water liquid seal device (38) is arranged on the other path of refrigerant water pipeline, and the two paths of refrigerant water are converged and then enter the first evaporator (18); the second refrigerant water U-shaped pipe (11) for feeding the refrigerant water of the second condenser (4) into the second evaporator (13) is divided into two paths from the bottom, a second refrigerant water ball valve (36) is arranged on one path of refrigerant water pipeline, a second refrigerant water liquid seal device (37) is arranged on the other path of refrigerant water pipeline, and the two paths of refrigerant water are converged and then enter the second evaporator (13); a first concentrated solution regulating valve (40) is arranged on the concentrated solution inlet first absorber pipe (21); a second concentrated solution regulating valve (35) is arranged on the concentrated solution inlet second absorber pipe (10).
2. The lithium bromide absorption unit for two-stage steam heat pump and hot water refrigeration according to claim 1, wherein: when heating in winter, the hot water inlet valve (27), the hot water outlet valve (28), the cold water inlet valve (32), the cold water outlet valve (31), the cooling water inlet valve (33) and the cooling water outlet valve (34) are all closed, and the first hot water generator (29) and the second hot water generator (30) stop working; the method comprises the steps of opening a first steam inlet regulating valve (25), a first condensate outlet valve (24), a second steam inlet regulating valve (6), a second condensate outlet valve (7), a waste heat water inlet valve (9), a waste heat water outlet valve (8), a heating hot water inlet valve (22) and a heating hot water outlet valve (26) all, closing a first refrigerant water ball valve (39) on a first refrigerant water U-shaped pipe (20) and a second refrigerant water ball valve (36) on a second refrigerant water U-shaped pipe (11), enabling refrigerant water from a first condenser (1) to enter a first evaporator (18) through a first refrigerant water seal (38) on the first refrigerant water U-shaped pipe (20), enabling refrigerant water from a second condenser (4) to enter a second evaporator (13) through a second refrigerant water seal (37) on the second refrigerant water U-shaped pipe (11), regulating a first concentrated solution regulating valve (40) on the first absorber pipe (21), and regulating a second concentrated solution on the second absorber pipe (35).
3. The lithium bromide absorption unit for two-stage steam heat pump and hot water refrigeration according to claim 1, wherein: when in refrigeration in summer, the first steam inlet regulating valve (25), the first condensate outlet valve (24), the second steam inlet regulating valve (6), the second condensate outlet valve (7), the waste heat water inlet valve (9), the waste heat water outlet valve (8), the heating hot water inlet valve (22) and the heating hot water outlet valve (26) are all closed, and the first steam generator (2) and the second steam generator (3) stop working; the hot water inlet valve (27), the hot water outlet valve (28), the cold water inlet valve (32), the cold water outlet valve (31), the cooling water inlet valve (33) and the cooling water outlet valve (34) are all opened, and then a first cold water ball valve (39) on the first cold water U-shaped pipe (20) and a second cold water ball valve (36) on the second cold water U-shaped pipe (11) are opened to adjust the concentrated solution to enter a first concentrated solution adjusting valve (40) on the first absorber pipe (21) and adjust the concentrated solution to enter a second concentrated solution adjusting valve (35) on the second absorber pipe (10); the refrigerant water from the first condenser (1) enters the first evaporator (18) through a first refrigerant water ball valve (39) on the first refrigerant water U-shaped pipe (20), and the refrigerant water from the second condenser (4) enters the second evaporator (13) through a second refrigerant water ball valve (36) on the second refrigerant water U-shaped pipe (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910607742.3A CN110307663B (en) | 2019-07-08 | 2019-07-08 | Two-stage type steam heat pump and hot water type refrigerating lithium bromide absorption unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910607742.3A CN110307663B (en) | 2019-07-08 | 2019-07-08 | Two-stage type steam heat pump and hot water type refrigerating lithium bromide absorption unit |
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| CN110307663A CN110307663A (en) | 2019-10-08 |
| CN110307663B true CN110307663B (en) | 2023-12-19 |
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| CN1189598A (en) * | 1998-01-08 | 1998-08-05 | 江苏双良集团公司 | Two-section or multi-section hot water lithium bromide absorbing refrigerating unit |
| CN106931678A (en) * | 2017-04-14 | 2017-07-07 | 双良节能系统股份有限公司 | Steam type first-class lithium bromide absorption type heat pump unit with refrigerating function |
| CN106989536A (en) * | 2017-04-14 | 2017-07-28 | 双良节能系统股份有限公司 | Multifunctional steam type first class lithium bromide absorptive heat pump unit |
| CN206695432U (en) * | 2017-04-14 | 2017-12-01 | 双良节能系统股份有限公司 | Multifunctional steam type first class lithium bromide absorptive heat pump unit |
| CN108518888A (en) * | 2018-05-02 | 2018-09-11 | 双良节能系统股份有限公司 | The solution parallel connection type lithium bromide absorption type refrigeration heat pump unit of variable effect |
| CN210220284U (en) * | 2019-07-08 | 2020-03-31 | 双良节能系统股份有限公司 | Lithium bromide absorption type unit with two-section type steam heat pump and hot water refrigeration |
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2019
- 2019-07-08 CN CN201910607742.3A patent/CN110307663B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1189598A (en) * | 1998-01-08 | 1998-08-05 | 江苏双良集团公司 | Two-section or multi-section hot water lithium bromide absorbing refrigerating unit |
| CN106931678A (en) * | 2017-04-14 | 2017-07-07 | 双良节能系统股份有限公司 | Steam type first-class lithium bromide absorption type heat pump unit with refrigerating function |
| CN106989536A (en) * | 2017-04-14 | 2017-07-28 | 双良节能系统股份有限公司 | Multifunctional steam type first class lithium bromide absorptive heat pump unit |
| CN206695432U (en) * | 2017-04-14 | 2017-12-01 | 双良节能系统股份有限公司 | Multifunctional steam type first class lithium bromide absorptive heat pump unit |
| CN108518888A (en) * | 2018-05-02 | 2018-09-11 | 双良节能系统股份有限公司 | The solution parallel connection type lithium bromide absorption type refrigeration heat pump unit of variable effect |
| CN210220284U (en) * | 2019-07-08 | 2020-03-31 | 双良节能系统股份有限公司 | Lithium bromide absorption type unit with two-section type steam heat pump and hot water refrigeration |
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